package main

import "fmt"

func main() {
	m := make(map[string]int)
	m["one"] = 1
	m["two"] = 2
	fmt.Println(m)
	fmt.Println(len(m))
	fmt.Println(m["one"])
	fmt.Println(m["unknow"])

	r,ok :=m["unknow"]
	fmt.Println(r,ok)
	delete(m,"one")
	m2 := map[string]int{"one":1,"two":2}
	var m3 = map[string]int{"one":1,"two":2}
	fmt.Println(m2,m3)
}
